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Basic
Centrifugal Pumps
Brake horsepower
Pump Efficiency
Specific speed (US)
Suction specific speed (US)
Electrical Motors & Systems
HP - AC Single Phase
HP - AC Three Phase
HP - AC Two Phase
HP - Direct Current
KW - AC Single Phase
KW - AC Three Phase
KW - AC Two Phase
KW - Direct Current
Financial
Annuity
Future Value
Payback Time
Mechanical Seals and Gaskets
Throat Bushing Sizing
Miscellaneous
Belt-Drive Pulleys
MTBR
Reynolds Number
PD Pumps
Power pump hp
Single acting displacement
Piping Design
Friction Head Loss
Max. Allowable Internal Pressure
Pipe Sizing Economics
Piping Fitting and Valve Losses
Pressure, Head, and Flow
Converting fluid velocity to velocity head
Converting pressure to head
Converting velocity to flow
Pump Design
Peripheral velocity of an impeller
Shaft shear stress
Torque with hp and speed
Vibration
Acceleration, displacement
Velocity (in/sec) pk to g's
Velocity (in/sec) pk to mils pk
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PD Pumps
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Power pump hp
Power pump horsepower
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Calculator
Input 4 of 5 variables to solve for the unknown.
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Symbol
Variable
Input
Units
BHP
Brake Horsepower
horsepower
watts
kilowatts
foot-pounds/minute
foot-pounds/second
btu/second
btu/minute
btu/hour
Q
Flow
gallons/minute
cubic feet/minute
cubic feet/second
meters³/minute
centimeter³/minute
gallons/hour
meters³/hour
barrels/minute (petroleum)
barrels/hour (petroleum)
barrels/day (petroleum)
barrels/minute (US)
barrels/hour (US)
barrels/day (US)
liters/hour
liters/minute
P
d
Discharge Pressure
pounds/in²
pounds/in²
feet H2O
inches H2O
inches mercury
pounds/ft²
newton/meter²
pascals
mill bars
atmospheres
bars
standard atmospheres
newton/m²
P
s
Suction Pressure
pounds/in²
pounds/in²
feet H2O
inches H2O
inches mercury
pounds/ft²
newton/meter²
pascals
mill bars
atmospheres
bars
standard atmospheres
newton/m²
ME
Mechanical Efficiency
mechanical efficiency
